Tension device



f March 30 192s.4 l

H. A. OWEN TENSION DEVICE F'jled Sept. 5. 1925 ,Patented Mar. 30, 1926.

AUNITED s'rnrns PATENT orifice.

l HENRY A. OWEN, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO WHITINlV-IA-- CHINE WORKS,` OF WHITINSVILLE, MASSACHUSETTS, VA CORPORATION OFMASSA-'- l eHUsnTTs.

TENSION DEVICE.

Application filed September 5, 1925. Serial No. 54,658.

To all whom t mag/concern.'

Be it known that I, HENRY OWEN, a citizen of the United States, residingat lhitinsville,` in the county of lVorcester and Commonwealth ofMassachusetts, have invented certain new and useful Improvements inrlension Devices, of which thel following is a specification.

My invention relates to tension devices for yarn and thread windingmachines.

The principal object of the invention is Yto provide a vdevice in whichthe tension of Vthe yarn may be regulated with precision andl anydesired amount of tension maintained without subjecting the yarn toundue strains.

lAnother object of the invention is to provide a construction whereby adesirable cleaning of the yarn is eected. The principle of thecombination will be made apparent from the illustrative embodiment shownin the drawing, wherein- Figure 1 is a cross section of a portion of aspooler of conventional type showing my improved tension deviceincorporatedA therewith;

Figure 2 is a plan view of the tension device;

Figure 3 is a sectional elevation on line 3 3 of Figure 2;

Figure 4l is an end elevation of the tension device; and Y Figure 5 isan enlarged sectional view showing the relative positions of the tensiondisks and the supporting bearing of the lower disk.

Referring to the drawings, Figure 1 shows the yarn 2 being drawn from astationary bobbin 4 through my improved tention device and then wound onthe rotating spool 5. d I y i The tension device which I have shownherein comprises a base member 7 which is adjustably mounted on somepart of the,V

machine preferably. as is shown, on the traversing rod 8. .y The yarn 2is drawn from the bobbin l'through the notch orguide 6 on the outer edgeof the base member 7 and` thence between the surfaces of two rotatabledisks, the resistance which they offerto rotation imparts a tension tothe yarn. The lower disk 9 made of thin flexible metal is rotatable on abearing 10 formed in the upper surface of the base member 7. The upsagetothe floor below. v Additional tension to the yarn may be had per disk11, superimposed on the lower disk 9, is slidably and rotatably mountedon a pin 12 whose axis is at right angles to the upper face of the basemember 7. Thevpn 12 is fastened to the bracket 13 which is in astationary relation with the upper surface of the base member 7. Thepositionof the pin 12 is such that the centre of rotation of l the upperdisk 11 is offset lfromthe centre of rotation of thelewer disk v9. Thisec- *centricity ofthe centres of rotation between the disks is anessential factor in eecting yarn in its passage between the disks. -Toprevent the matter that is thus removed from the yarn from accumulatingand obstruct-ing the motion of the disks the lower disk 9 is providedwith ya centrally located circular aperture 14 registering with acircular aperture 15 in thebase member 7 through which the waste matterfinds aV pas-- by the usev of one or more'weights 16'- slidably androtatably mounted on thepin 12 and exerting pressure by their weight onthe top of the vhub of the disk 11. f

To facilitate the threading .of the'yarn between the, surfaces of thedisks the upper disk has upwardly flaring edgeswhich provides a crevicebetween the surfaces of theV disks into which the yarn falls from thein- Y clined end 17 ofthe bracket 13.

I claim: l A yarn tension device comprising a base,

` a circular aperture in the base, a disk rotat- .to the upper face ofthe base and offset from the centre of the aperture in the first disk, abracket in stationary relation with the base and supporting the pin, thesecond disk rotatably and slidably mounted thereon, a

notch in the base guiding the yarn betweenH the surfaces of the twodisks, and an inclined member to facilitate the threading of the yarn.

In testimony whereof, I have signed this specification.

HENRY A. OW'EN.

